root/trunk/htdocs/diagnosis/index.php @ 1099

<?php

include "../common/common.php";
include get_language_file("./lang");

$knownUnstablePhpVersions = array(
        array('=', '5.3.14', 'random corrupt memory on high concurrent'),
        );

$module = "diagnosis";

$notes = array();
$activeNote = null;
function checking($item) // {{{
{
    global $activeNote;
    $activeNote = array('item' => $item);
}
// }}}
function result($type, $result, $suggestion = "") // {{{
{
    global $notes, $activeNote;
    $notes[] = array(
            'type' => $type
            , 'result' => ($type != 'skipped' && !$suggestion ? "OK. " : "") . $result
            , 'suggestion' => $suggestion
            ) + $activeNote;
}
// }}}
function getCacheInfos() // {{{
{
    $phpCacheCount = xcache_count(XC_TYPE_PHP);
    $varCacheCount = xcache_count(XC_TYPE_VAR);

    $cacheInfos = array();
    for ($i = 0; $i < $phpCacheCount; $i ++) {
        $cacheInfo = xcache_info(XC_TYPE_PHP, $i);
        $cacheInfo['type'] = XC_TYPE_PHP;
        $cacheInfos[] = $cacheInfo;
    }

    for ($i = 0; $i < $varCacheCount; $i ++) {
        $cacheInfo = xcache_info(XC_TYPE_VAR, $i);
        $cacheInfo['type'] = XC_TYPE_VAR;
        $cacheInfos[] = $cacheInfo;
    }
    return $cacheInfos;
}
// }}}
function getIniFileInfo() // {{{
{
    ob_start();
    phpinfo(INFO_GENERAL);
    $info = ob_get_clean();
    ob_start();
    if (preg_match_all("!<tr>[^<]*<td[^>]*>[^<]*(?:Configuration|ini|Server API)[^<]*</td>[^<]*<td[^>]*>[^<]*</td>[^<]*</tr>!s", $info, $m)) {
        $iniInfo = '<table class="phpinfo">'
            . implode('', $m[0])
            . '</table>';
    }
    else {
        $iniInfo = '';
    }
    $loadedIni = '';
    $iniDirectory = '';
    if (preg_match('!<td class="v">(.*?\\.ini)!', $info, $m)) {
        $loadedIni = $m[1];
    }
    else if (preg_match('!Configuration File \\(php.ini\\) Path *</td><td class="v">([^<]+)!', $info, $m)) {
        $iniDirectory = $m[1];
    }
    return array($loadedIni, $iniDirectory, $iniInfo);
}
// }}}

$xcacheLoaded = extension_loaded('XCache');
checking(_T("XCache extension")); // {{{
if (!$xcacheLoaded) {
    list($loadedIni, $iniDirectory, $iniInfo) = getIniFileInfo();
    if ($loadedIni) {
        echo sprintf(_T("Add extension=xcache.so (or xcache.dll) in %s"), $loadedIni);
    }
    else if (preg_match('!Configuration File \\(php.ini\\) Path *</td><td class="v">([^<]+)!', $info, $m)) {
        echo sprintf(_T("Please put a php.ini in %s and add extension=xcache.so (or xcache.dll) in it"), $iniDirectory);
    }
    else {
        echo _T("Cannot detect ini location");
    }
    echo _T(" (See above)");
    result("error", _T('Not loaded'), ob_get_clean());
}
else {
    result("info", _T('Loaded'));
}
// }}}
if ($xcacheLoaded) { // {{{ load XCache summary
    $cacheInfos = getCacheInfos();

    $ooms = 0;
    $errors = 0;
    $disabled = 0;
    $compiling = 0;
    $readonlyProtection = false;
    $phpCacheCount = xcache_count(XC_TYPE_PHP);
    $phpCached = 0;
    $varCached = 0;
    foreach ($cacheInfos as $cacheInfo) {
        $ooms += $cacheInfo['ooms'];
        $errors += $cacheInfo['errors'];
        $disabled += $cacheInfo['disabled'] ? 1 : 0;
        if ($cacheInfo['type'] == XC_TYPE_PHP) {
            $compiling += $cacheInfo['compiling'] ? 1 : 0;
            $phpCached += $cacheInfo['cached'];
        }
        if ($cacheInfo['type'] == XC_TYPE_VAR && $cacheInfo['cached']) {
            $varCached += $cacheInfo['cached'];
        }
        if ($cacheInfo['can_readonly']) {
            $readonlyProtection = true;
        }
    }
}
// }}}
checking(_T("Enabling PHP Cacher")); // {{{
if (!$xcacheLoaded) {
    result("skipped", "XCache not loaded");
}
else if (!ini_get("xcache.size")) {
    result(
        "error"
        , _T("Not enabled: Website is not accelerated by XCache")
        , _T("Set xcache.size to non-zero, set xcache.cacher = On")
        );
}
else if (!$phpCached) {
    result(
        "error"
        , _T("No php script cached: Website is not accelerated by XCache")
        , _T("Set xcache.cacher = On")
        );
}
else {
    result("info", _T('Enabled'));
}
// }}}
checking(_T("PHP Compile Time Error")); // {{{
if (!$xcacheLoaded) {
    result("skipped", "XCache not loaded");
}
else if (!$phpCacheCount) {
    result("skipped", "XCache PHP cacher not enabled");
}
else if ($errors) {
    result(
        "warning"
        , _T("Error happened when compiling at least one of your PHP code")
        , _T("This usually means there is syntax error in your PHP code. Enable PHP error_log to see what parser error is it, fix your code")
        );
}
else {
    result("info", _T('No error happened'));
}
// }}}
checking(_T("Busy Compiling")); // {{{
if (!$xcacheLoaded) {
    result("skipped", "XCache not loaded");
}
else if (!$phpCacheCount) {
    result("skipped", "XCache PHP cacher not enabled");
}
else if ($compiling) {
    result(
        "warning"
        , _T("Cache marked as busy for compiling")
        , _T("It's ok if this status don't stay for long. Otherwise, it could be a sign of PHP crash/coredump, report to XCache devs")
        );
}
else {
    result("info", _T('Idle'));
}
// }}}
checking(_T("Enabling VAR Cacher")); // {{{
if (!$xcacheLoaded) {
    result("skipped", "XCache not loaded");
}
else if (!ini_get("xcache.var_size")) {
    result(
        "error"
        , _T("Not enabled: code that use xcache var cacher fall back to other backend")
        , _T("Set xcache.var_size to non-zero")
        );
}
else {
    result("info", _T('Enabled'));

    checking(_T("Using VAR Cacher")); // {{{
    if ($varCached) {
        result(
            "warning"
            , _T("No variable data cached")
            , _T("Var Cacher won't work simply by enabling it."
                . " PHP code must call XCache APIs like xcache_set() to use it as cache backend. 3rd party web apps may come with XCache support, config it to use XCache as cachign backend")
            );
    }
    else {
        result("info", _T('Cache in use'));
    }
    // }}}
}
// }}}
checking(_T("Cache Size")); // {{{
if (!$xcacheLoaded) {
    result("skipped", "XCache not loaded");
}
else if ($ooms) {
    result(
        "warning"
        , _T("Out of memory happened when trying to write to cache")
        , _T("Increase xcache.size and/or xcache.var_size")
        );
}
else {
    result("info", _T('Enough'));
}
// }}}
checking(_T("Slots")); // {{{
$slotsTooBig = null;
$slotsTooSmall = null;
foreach ($cacheInfos as $cacheInfo) {
    if ($cacheInfo['size'] < '1024000' && $cacheInfo['slots'] >= '8192') {
        $slotsTooBig = $cacheInfo['type'];
        break;
    }
    if ($cacheInfo['slots'] < $cacheInfo['cached'] / 2) {
        $slotsTooSmall = $cacheInfo['type'];
        break;
    }
}
if (isset($slotsTooBig)) {
    $prefix = $slotsTooBig == XC_TYPE_PHP ? '' : 'var_';
    result(
        "warning"
        , _T("Slots value too big")
        , sprintf(_T("A very small value is set to %s value and leave %s value is too big.\n"
            . "Decrease %s if small cache is really what you want"), "xcache.{$prefix}size", "xcache.{$prefix}slots", "xcache.{$prefix}slots")
        );
}
else if (isset($slotsTooSmall)) {
    $prefix = $slotsTooSmall == XC_TYPE_PHP ? '' : 'var_';
    result(
        "warning"
        , _T("Slots value too small")
        , sprintf(_T("So many item are cached. Increase %s to a more proper value"), "xcache.{$prefix}slots")
        );
}
else {
    result("info", _T('Looks good'));
}
// }}}
checking(_T("Cache Status")); // {{{
if (!$xcacheLoaded) {
    result("skipped", "XCache not loaded");
}
else if ($disabled) {
    result(
        "warning"
        , _T("At least one of the caches is disabled. ")
            . (ini_get("xcache.crash_on_coredump") ? _T("It was disabled by PHP crash/coredump handler or You disabled it manually") : _T('You disabled it manually'))
        , _T("Enable the cache.")
            . (ini_get("xcache.crash_on_coredump") ? " " . _T("If it was caused by PHP crash/coredump, report to XCache devs") : "")
        );
}
else {
    result("info", _T('Idle'));
}
// }}}

checking(_T("Coredump Directory")); // {{{
if (!$xcacheLoaded) {
    result("skipped", "XCache not loaded");
}
else if (!ini_get("xcache.coredump_directory")) {
    result("info"
            , _T("Not enabled")
            , _T("Enable coredump to know your PHP crash. It can also be enabled in fpm other than in XCache")
            );
}
else if (ini_get("xcache.coredump_directory")) {
    $coreDir = ini_get("xcache.coredump_directory");
    if (substr($coreDir, -1) != DIRECTORY_SEPARATOR) {
        $coreDir .= DIRECTORY_SEPARATOR;
    }
    $coreFiles = glob($coreDir . "core*");
    if ($coreFiles) {
        result("error"
                , _T("Core files found:\n") . implode("\n", $coreFiles)
                , _T("Disable XCache PHP Cacher (xcache.size=0), remove the core file(s). If core file appears again, report call stack backtrace in the core to XCache devs")
                );
    }
    else {
        result("info"
                , _T("Enabled")
                , sprintf(_T("You can see core files if PHP crash in %s if PHP crash"), ini_get("xcache.coredump_directory"))
                );
    }
}
// }}}
checking(_T("Readonly Protection")); // {{{
if (!$xcacheLoaded) {
    result("skipped", "XCache not loaded");
}
else if (ini_get("xcache.readonly_protection") && !$readonlyProtection) {
    result(
        "error"
        , _T("Set to enabled but not available")
        , _T("Use xcache.mmap_path other than /dev/zero")
        );
}
else {
    result(
        "info"
        , $readonlyProtection ? _T("Enabled") : _T("Disabled")
        , _T("Enable readonly_protection == --performance & ++stability. "
            . "Disable readonly_protection == ++performance & --stability")
        );
}
// }}}
checking(_T("XCache modules")); // {{{
if (!$xcacheLoaded) {
    result("skipped", "XCache not loaded");
}
else {
    $xcacheModules = explode(" ", XCACHE_MODULES);
    $unexpectedModules = array_intersect($xcacheModules, array("coverager", "disassembler"));
    if ($unexpectedModules) {
        result(
            "warning"
            , implode("\n", $unexpectedModules)
            , _T("Acceptable. Module(s) listed above are built into XCache but not for production server\n"
                . "Leave it as is if you're feeling good.\n"
                . "Re-configure XCache with the above module(s) disabled if you're strict with server security.")
            );
    }
    else {
        result("info", _T('Idle'));
    }
}
// }}}
checking(_T("XCache test setting")); // {{{
if (!$xcacheLoaded) {
    result("skipped", "XCache not loaded");
}
else if ((int) ini_get('xcache.test') == 1) {
    result(
        "warning"
        , _T("Enabled")
        , _T("xcache.test is for testing only, not for server. set it to off")
        );
}
else {
    result("info", _T('Disabled'));
}
// }}}
checking(_T("PHP Version")); // {{{
$phpVersion = phpversion();
$unstablePhpVersionReason = null;
foreach ($knownUnstablePhpVersions as $knownUnstablePhpVersion) {
    list($compareOp, $unstablePhpVersion, $reason) = $knownUnstablePhpVersion;
    if ($compareOp) {
        $isUnstable = version_compare($phpVersion, $unstablePhpVersion, $compareOp);
    }
    else {
        $isUnstable = substr($phpVersion, 0, strlen($unstablePhpVersion)) == $unstablePhpVersion;
    }

    if ($isUnstable) {
        $unstablePhpVersionReason = $reason;
        break;
    }
}
if ($unstablePhpVersionReason) {
    result("error"
            , _T("The version of PHP you're using is known to be unstable: ") . $unstablePhpVersionReason
            , _T("Upgrade to new version of PHP"));
}
else {
    result("info", _T("Looks good"));
}
// }}}
checking(_T("Extension Compatibility")); // {{{
$loadedZendExtensions = get_loaded_extensions(true);
if (array_search("Zend Optimizer", $loadedZendExtensions) !== false) {
    result(
        "warning"
        , _T("Zend Optimizer loaded")
        , _T("Optimizer feature of 'Zend Optimizer' is disabled by XCache due to compatibility reason; the Loader of it is still available, encoded files are still supported")
        );
}
// }}}

include "./diagnosis.tpl.php";